JEE Questions for Chemistry Solutions Quiz 12 - MCQExams.com

At 293 K temperature, for solubility of all given gases, in water, which gas possesses higher value of KH ?
  • He
  • N2
  • H2
  • O2
At 293 K temperature, for solubility of all given gases, in water, which gas possesses lower value of KH ?
  • Carbon dioxide
  • formaldehyde
  • methane
  • vinyl chloride
At 298 K temperature, for solubility of all given gases, which of the following is the correct ascending order of values of Henry’s constant ?
  • CH4 2 = CH – Cl
  • HCHO < CH2 = CH – Cl < CH4 < Ar
  • HCHO < CH4 < CH2 = CH – Cl < Ar
  • CH2 = CH – Cl < HCHO < CH4 < Ar
At 293 K temperature, for solubility of all given gases, which of the following is the correct descending order of values of Henry’s constant ?
  • H2 > N2 > O2 > He
  • N2 > H2 > O2 > He
  • He > N2 > H2 > O2
  • O2 > H2 > N2 > He
At constant temperature, on the basis of the given graph, which gas possesses higher solubility?
Chemistry-Solutions-7158.png
  • A
  • B
  • C
  • D
What will be the ratio of any colligative properties of 1.0 m aqueous solutions of Nacl, Na2So4 ad K4 [Fe(CN)6] (Assume that solute completely (100%) dissociates in the solution)
  • 2 : 3 : 4
  • 1 : 2 : 4
  • 2 : 3 : 5
  • 1 : 3 : 5
At constant temperature, vapour pressure of aqueous solutions of Na2so4, urea and AlCl3 are equal with the vapour pressure of aqueous solution of 1.2 m kcl solution; then molality of an aqueons of Na2So4, urea and AlCl3 are respectively –
  • 3.6 .2.4 m,4.8 m
  • 0.8 m,2.4 m, 0.6 m
  • 0.6 m, 3.6 m, 0.8 m
  • 3.6 m, 1.2 m, 2.4 m
Mention the correct value of y in the Reference of given below
Chemistry-Solutions-7161.png
  • 62.5 Torr
  • 37.5 Torr
  • 60 Torr
  • 16.33 Torr
In the reference of given graph, The value of RU – YQ × UV is`
Chemistry-Solutions-7162.png
  • YQ.UV
  • QU. UW
  • VW. QU
  • ST.YQ
Ionic substances are completely dissociates in the given solutions, then which of the following solutions possesses highest freezing point ?
  • 0.01m Urea
  • 0.01m NaCl
  • 0.01m BaCl2
  • 0.01m Al2(SO4)3
1.0 molal aqueous solution of a substance boils at 100.55o C ; then, at what approximate temperature, it freezes ? (Kb = 0.51o C – kg - mole-1 and Kb = 1.86o C – kg - mole-1)
  • 272 K
  • 271 K
  • 375 K
  • 274 K
Ionic substances are completely dissociates, then aqueous solution of which of the following substances having least freezing point ?
  • glucose
  • NaCl
  • Al2(SO4)3
  • CaCl2
0.2 M aqueous solution of NH4Cl is isotonic with which of the following aqueous solution ?
  • 0.1 M Na3PO4
  • 0.2 M K2SO4
  • 0.1 M Al2(SO4)3
  • none of thses
At constant temperature, osmotic pressure of an aqueous solution of 1.5 M NH4NO3 and xN Al2(SO4)3 are equal, then mention the value of X. (Assume that ionic solid substances completely dissociates in the solution)
  • 0.1
  • 3.6
  • 1.2
  • 0.6
At constant temperature, vapour pressure of an aqueous solution of 1.5M NH4NO3 and xM Al2(SO4)3 are equal; then calculate the molality of an aqueous solution of Al2(SO4)3. (Assume that ionic solid substances completely dissociates in the solution)
  • 0.3m
  • 2.1m
  • 3.75m
  • 0.6m
Boiling point of the aqueous solution prepared by dissolving 1.5 mole substances in 1000 gm water at 1 atmosphere pressure is 100.5oC; then which of the following alternative is correct for the solution ? (Kb = 0.152oC – kg - mole-1)
  • i = 1
  • 1 < i < 2
  • i < 1
  • i > 2
Which of the following aqueous solution is isotonic with 0.2 m Na4[CoF6] solution ? (Assume that ionic solid substances completely dissociates in the solution)
  • 0.2 m urea
  • 0.25 m AlCl3
  • 0.15m CaCl2
  • 0.2 m CuSO4
Which type of solution, moist air is ?
  • gas
  • liquid
  • solid
  • colloidal
Aqueous solutions are separated by semipermeable membrane. For which pair of the given solution having maximum osmotic pressure ? (Assume that ionic solid substances completely dissociates in the solution)
  • 0.5 m NaCl | 0.1 m Na2SO4
  • 0.3 m NaCl | 0.1 m Na2SO4
  • 0.5 m NaCl | 0.1 m FeCl3
  • 0.5 m NaCl | 0.1 m sugar
At constant temperature, the vapour pressure of an aqueous solution of Na2SO4 and 0.3 m Na3PO4 are approximately equal; then, what would be the molality of an aqueous solution of Na2SO4 ? (Assume that ionic solid substances completely dissociates in the solution)
  • 0.5 m
  • 0.6 m
  • 0.4 m
  • 1.2 m
What will be the ratio of elevation in boiling point of aqueous solution of 1 m sugar, 1 CsCl, and 1 m Na2SO4 ? (Assume that ionic solid substances completely dissociates in the solution)
  • 3 : 2 : 1
  • 1 : 3 : 2
  • 1 : 2 : 3
  • 3 : 1 : 2
At constant temperature, solubility of which of the following substances decreases with increase in temperature ?
  • aqueous solution of sugar
  • aqueous solution of salt
  • aqueous solution of CO2
  • aqueous solution of KNO3
At constant temperature, in a closed vessel, an ideal solution is formed by liquid – A and liquid – B; and mole-fraction of A and B are 0.6 and 0.4 respectively. If vapour pressure of pure liquids are 125.0 and 62.5 mm respectively, then their mole-fraction in vapour state are respectively – (In vessel, no other component is in gaseous form)
  • 0.6 and 0.4
  • 0.4 and 0.6
  • 0.25 and 0.75
  • 0.75 and 0.25
At constant temperature, two liquids having osmotic pressure π1 and π2 are separated by semipermeable membrane, then, what will be the osmotic pressure of the system ?
  • π1 + π2
  • π1 – π2

  • Chemistry-Solutions-7166.png

  • Chemistry-Solutions-7167.png
Which of the following pair of solutions forms ideal solution ?
  • Chloro benzene, chloro ethane
  • benzene-toluene
  • acetone-chloroform
  • water, HCL
Which of the following pair forms true solutions ?
  • Hexane, heptane
  • chloro benzen, bromo benzen
  • chloro ethane, bromo ethane
  • phenol, aniline
What state does point s indicate ?
  • Mole-fraction and partial vapour pressure of both the liquids are same
  • Mole-fraction of the both the liquids are same, but their partial vapour pressures are different
  • Mole-fraction and partial vapour pressures of both the liquids are different
  • Mole-fraction of both the liquids are different, but their partial pressures are same.
What would be the elevation in boiling point of 0.1 m NaCl solution ? (Assume that Nacl dissociates completely)
  • kb/10
  • 10 kb
  • kb/5
  • k b/20
Which of the following semipermeable membrane is best one ?
  • parchment paper
  • copper frrocyanide
  • butter paper
  • cello phane
At constant temperature, binary ideal solution is formed by two liquids A and B. At equilibrium, mole-fraction of liquid A is 0.7 and in vapour state mole-fraction of A is 0.4 Poa + Pob =90 mm then at the same temperature, what will be the vapour pressure of pure liquid A and B ?
  • 40 mm, 50 mm
  • 30 mm, 60 mm
  • 50 mm, 40 mm
  • 20 mm, 70 mm
0:0:1


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